Brace yourself for the full details of BMW Alpina's B5 F10 Bi-Turbo, which is based on the 2011 BMW 5-Series. Under the hood, we find the 4.4-liter V8, which can deliver 507 PS (373 kW) and 700 Nm of torque.
For optimal results, the indirect intercooling system, as well as other parts, was modified. And to achieve a fuel economy rating of 10.8 liters/100 km, it is partnered with a SWITCH-TRONIC 8-speed sport automatic transmission from ZF.
The vehicle is capable of accelerating from zero to 100 km/h (62 mph) in 4.7 seconds and can hit a top speed of 307 km/h (191 mph). B5 is also equipped with a "neutral" suspension set-up that includes shorter but progressive springs and specialized suspension arms. Also offered is an electronically-adjustable system (Variable Damper Control) that comes in four settings: Normal, Comfort, Sport and Sport+.
Alpina B5 gets 20-inch Alpina wheels covered in 255/35ZR20 tires at the front and 285/30ZR20 for the rear. A full aerodynamic package consists of Alpina branded front fascia, side skirts, rear bumper with an integrated quad-exhaust and optional diffuser.
The interior gets a leather finish with electronic gadgets, including gauges in a black panel LCD display from Alpina. Pricing has yet to be revealed.
The 2011 Alpina B5 Bi-Turbo does not feature "properly stiff" suspensions, but instead has a neutral set-up that provides the ideal technical compromise. This was partly achieved by employing shorter yet very progressive springs and special suspension arms, resulting to more camber on the vehicle's front track.
For this vehicle, ALPINA went for a balanced and direct chassis set-up, setting aside the pure sport-orientated approach for achieving an agile suspension with precise turn-in. Supporting this chassis set-up are lightweight 20-inch ALPINA CLASSIC wheels wrapped in new Michelin Pilot Super Sport tires measuring 255/35ZR20 at the front and 285/30ZR20 at the rear.
Aside from providing a very high level of high-speed stability, these all-round non run-flat tires are capable of offering greater traction on wet roads, enhanced hydro-planing behavior and outstanding rolling comfort.
To meet customer demands for comfort, everyday usability and sharp handling, ALPINA fitted the B5 Bi-Turbo with electronically adjustable suspension (Variable Damper Control). This allows the driver to choose between different modes -- Normal, Comfort, Sport and Sport+ -- just by accessing the control switch located on the left of the shift lever.
ALPINA has calibrated this system, connecting it to other system parameters that control steering assistance, torque cushioning and DSC. The B5 Bi-Turbo is also capable of transitioning seamlessly from being a comfortably luxurious car to one that offers dynamic performance.
All of these attributes -- light steering, seamless shifting transmission and ultra-comfort – make the B5 Bi-Turbo any driver's perfect partner during stop-and-go traffic, long trips, or when travelling over rough road surfaces.
But when required, a driver just needs to push a button to make the B5 Bi-Turbo capable of maneuvering corners and thrilling road sections, turning itself into a very agile and light-footed car. Moreover, drivers would love not having to do mandatory up-shifts, thanks to the combination of the eight-speed sport automatic's manual mode and the Sport or Sport+ modes.
This means that when tackling twisty sections of road or around hairpins, drivers would not need to manually upshift and thus remain in their selected gear. Customers can have their B5 Bi-Turbo specified with the optional Dynamic Drive, which reduces body roll in corners and makes the vehicle more agile.
When running in Sport+ mode, the B5 Bi-Turbo's dynamic control systems offer a leveled-up version of DSC – Dynamic Traction Control or DTC. DTC could enable more slip at the B5 Bi-Turbo's rear wheels and even delay the point at which the traction control systems step in.